Straw'House

7503
Last modified by the author on 08/06/2020 - 12:35

Renovation

  • Building Type : Isolated or semi-detached house
  • Construction Year : 2019
  • Delivery year : 2019
  • Address 1 - street : Abondant 28410 ABONDANT, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 179 m2
  • Construction/refurbishment cost : 115 700 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 646.37 €/m2
  • Primary energy need
    45 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

The objective of this project is to reuse existing built spaces, conserve the local rural landscape,  reuse certain privileged places in the heart of the village and to mix private and professional uses.

The aim is also to give the preserved local buildings a new lease of life, helping to guarantee their conservation and maintenance. This approach also limits rural sprawl and finds an interest in the densification of village hearts.

The house is part of an agricultural building, in the heart of the village. Adapting to current urban requirements, the house finds its place under an existing equine fodder storage shed, still in operation.

 

Sustainable development approach of the project owner

Designed to be bioclimatic despite the context in which it is built, the house is constructed of a timber frame and straw insulation, and is inserted under an existing and preserved agricultural shed.

This double envelope makes it possible to preserve the existing rural landscape, to limit heat loss due to the prevailing winds and direct sunlight, and also to reduce the construction costs of the exterior cladding. The climatic protection of the existing shed allowed the construction site to be established in summer and winter, without months of interruption.

 

Architectural description

The building is passive and the spaces are compact.

On two levels this compact house was assembled in 12 months with two people mainly, by juxtaposing 15 similar modules in a repetitive way.

The materials used are biobased and respect the good health of users. The straw was harvested 3 kilometers from the site, by a local farmer using traditional methods.

 

The living rooms are arranged upstairs allowing hot air to be used in an optimum way. Conversely on the ground floor we find the sleeping and service areas.

 

If you had to do it again?

This achievement is a visual demonstration of the materials used, sustainable construction techniques and constitutes the source of essential knowledge for the architect, conductor of bioclimatic construction.

See more details about this project

 https://www.envirobatcentre.com/centre-de-ressources/les-projets/fiche-projet/paille-house

Photo credit

P. Loisy

Contractor

    Pauline Loisy Architecture

    Pauline LOISY

Construction Manager

Stakeholders

Energy consumption

  • 45,00 kWhep/m2.an
  • 67,00 kWhep/m2.an
  • RT 2012

Systems

    • Wood boiler
    • Heat pump
    • No cooling system
    • Double flow heat exchanger
    • Wood boiler

    Les apports solaires gratuits sont favorisés par l'orientation, des menuiseries mixtes triple vitrages et des brises soleil orientables.

Urban environment

    The house is located in the village of Abondant a few steps from the center. Abondant is a rural town of nearly 2,300 souls, located near Dreux (10 km) but also 75 km west of Paris and 45 km north of Chartres.

Product

    Management / Others

Construction and exploitation costs

  • 115 700

Water management

    All the rainwater from the shed is collected in a 15m³ above-ground tank which supplies all the water points in the house. The overflow is directed towards a pond which encourages local biodiversity.

Comfort

    The house has a wood stove as the only heating system, located in front of a wall with high inertia, helping to diffuse a gentle and homogeneous heat.

    Free solar gain is favored by orientation, triple glazed mixed joinery and adjustable sun shades. All these elements contribute to summer comfort.

    The installation of cork panels on the intermediate floor joists contributes to acoustic comfort.

Reasons for participating in the competition(s)

​Ce projet est résolument bas carbone :

  • Dans le choix de réutiliser un bâtiment existant
  • Par les matériaux avec l’ossature bois et la paille issue de cultures responsables situées à 3 km du chantier
  • Avec la « légèreté » du chantier réalisé à partir de 15 modules préfabriqués montés principalement à deux personnes
  • Sur le plan énergétique, grâce à la compacité du plan qui facilite le chauffage.
  • Le choix de mettre les pièces nécessitant moins de chauffage en rez-de-chaussée pour optimiser la propension de la chaleur à « monter » dans les pièces à vivre

Building candidate in the category

Low Carbon

Low Carbon

Green Solutions Awards 2020-2021
PDF
 wood straw bioclimatism bio-based low carbon

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Emmanuel d'Envirobat Centre


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